Home » Mechanical Engineering » Thermodynamics

Isothermal process law: identify the governing gas law For an isothermal (constant-temperature) process of an ideal gas, select the correct law that applies. Choose the correct option.

Difficulty: Easy

Boyle's law
Charles' law
Gay-Lussac law
Avogadro's law

Correct Answer: Boyle's law

Explanation:

Concept
For an isothermal process (T constant) of an ideal gas, the pressure–volume product remains constant: pV = constant. This is exactly Boyle's law.

Why the others are incorrect
Charles' law is V ∝ T at constant p; Gay-Lussac's is p ∝ T at constant V; Avogadro's relates equal volumes to equal moles at the same T and p.

Final Answer
Boyle's law

← Previous Question Next Question→

More Questions from Thermodynamics

Thermal efficiency comparison: Stirling cycle versus Carnot cycle State how the efficiency of the (reversible, regenerator-based) Stirling cycle compares with a Carnot cycle operating between the same temperature limits. Choose the correct relationship.
According to Kelvin-Planck's statement of second law of thermodynamics,
The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents
For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute temperature)
According to Gay-Lussac law, the absolute pressure of a given mass of a perfect gas varies __________ as its absolute temperature, when the volume remains constant.
The efficiency of Diesel cycle depends upon
The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)
The dual combustion cycle consists of one constant pressure, two constant volume and two isentropic processes.
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
Kelvin-Planck's law deals with

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion